Web Forms :: String Value In The Column Of Datatable?
Jan 27, 2010
I have string value in the column of datatable.I would like to assign seq no to different value.if they have the same value, I would like to assign the same seq no.if there isn't has the value in the column, then assign a new seq no.how to do this?for example:
I'm loading data from my database into a DataTable, and one of the columns is a date field.
[Code]....
I'd like to format that column so that instead of containing a full date, it will be formatted like "MM/DD/YYYY".
I've tried looping through each row in the table and changing the cell for that column, but I get an error saying that the string isn't a valid DateTime object.
I tried changing the column DateType to a string, but I get an error saying I can't change the DateType after the table is filled.
How can I do this? This seems like such a simple thing, but I'm having so much trouble with it.
If I am passed a datatable and I cant change the column structure..is there anyway to set an existing column to a Primary key so I can easily Find() the row I am looking for?
I am grabbing an XML feed an throwing it into a dataset. I am looping through the datatable that is in the dataset and adding a column to the datatable (Distance) that is the result of a calculation. What I then need to do is sort the dataset on the new column (Distance) I added, but it is not working... Here is a sample of my code.
What I have is a datatable being constructed from Sharepoint API. We dont need to worry about the sharepoint api.The code where it fills the data is as follows
Datatable dt = new datatable(); Sharepoint.fill(dt);
Write what I want is as the dt is being filled is to create another column called full path which has a formula col1+col2I dont want to do a for next loop after the dt is filled . very slow !
I want to transfer data from datatable to a gridview with a hyperlink column. But dont know how to do.
I attach my code as below, what i want to do is to output 2 columns in gridview, and the first column should be a hyperlink. However, now the first column still shows nothing.
Below is the code behind for a simple aspx page. The web form contains one GridView (GridView1) and one label (Label1). I create a Data Table, then add a row to the table. I then DataBind my GridView to the DataTable. (so far so good) When I run the page I do see the GridView and the single row of data. However the checkbox shown is not enabled, meaning the user cannot uncheck or check it. (As if was not enabled)
Imports System.Data.SqlClient Imports System.Data PartialClass test Inherits System.Web.UI.Page ProtectedSub Page_Load(ByVal senderAsObject,ByVal eAs System.EventArgs)HandlesMe.Load CreateDT() EndSub PrivateSub CreateDT() Dim dtAsNew DataTable Dim col1AsNew DataColumn [code]...
i build some shopping cart. I have Datalist that display products from SQL table (id, productName, productPrice) and "Add" button. After the user click the button the product appear in the GridView (im using Session DataTable) until now all fine and work greate! in every product i need to add 2 checkboxlist from SQL tables (its some extra to the product). How can i get the items the user was checked and put them with the product name in the same datatable coloumn? the aspx code:
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I have a DataSet comprised of two DataTables. One of the DataTables is further comprised of the results of two different SQL calls. I need to alphabetize the results of those SQL calls. After the seconds set of results is added to the DataTable I tried the following but the end result (displayed on the page) did not alphabetize the returned results. There was no error. Can anyone advise me please. 'programs' is the DataTable name, title is the column name.
I am getting a datatable from the SQL Server. In SQL Server the column headers are fine (mix of Capital and Small Letters). But when i am getting it in the front end, all the column names are in lower case. How can i get the column names in original Case.